<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>轮转数组</title>
</head>

<body>
  <script>
    //删除最后一个，把最后删除的那个元素添加到数组的最前面
    var nums = [1, 2, 3, 4, 5, 6, 7], k = 3
    for (var i = 0; i < k; i++) {
      var p = nums.pop();
      nums.unshift(p);
    }
    console.log(nums)
  </script>
</body>

</html>